Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
A practice exam or study guide for a journeyman electrician certification. It covers a wide range of electrical concepts and principles, including electromagnets, photovoltaic cells, dc motors, electrical measurements, capacitors, transformers, ac circuits, and more. The questions and answers provide a comprehensive review of the knowledge and skills required for an electrician's license. This document could be useful for electricians preparing for their journeyman exam, as well as students studying electrical engineering or technology. The level of detail and technical terminology suggests it is intended for a university-level audience with a strong background in electrical theory and practical applications.
Typology: Exams
1 / 12
This page cannot be seen from the preview
Don't miss anything!
An electromagnet can be switched on and off - answer โ โ And advantage of an electromagnet over a permanent magnet is Scatters light uniformly in all directions - answer โ โ An excellent diffuser surface is one that In a photovoltaic cell - answer โ โ Light is converted into electricity Armature - answer โ โ The rotating part of a DC motor is known as
Fish tape - answer โ โ A device used to pull wires through a conduit is called Approximately zero - answer โ โ In making a resistance test, remember that the resistance of a short circuit is Parallel - answer โ โ To increase current capacity, battery cells are connected in 10 - answer โ โ The hot resistance of an incandescent lamp is approximately how many times it's cold resistance Start measuring at the highest range - answer โ โ The proper way of measuring and unknown voltage with a multi-tester is to A charge - answer โ โ A capacitor stores what? Paper - answer โ โ What has the lowest dielectric strength
Moisture resistant and thermoplastic - answer โ โ Type TW conductor is what type? Low permeability - answer โ โ Steel is hard to magnetize because of its Commutator - answer โ โ A repulsion motor is equipped with a increase - answer โ โ When the temperature of a copper wire is raised, the resistance will Starting - answer โ โ The capacitor in a capacitor-start induction-run AC motor is connected in series with what winding? Cover - answer โ โ Defined as the shortest distance measured between a point on the top surface of any direct buried conductor, cable, conduit and a top surface of finish grade A battery - answer โ โ An ohmmeter consists of a meter movement in series with what?
Oil and soap - answer โ โ Greece is a lubricant that is basically a combination of what? Open - answer โ โ The continuity of a coil of winding may be determined by measuring the resistance of the coil. If the resistance measured is infinite, the coil winding is what? SPDT - answer โ โ A three-way switch is equivalent to what kind of switch? It makes the operation of each appliance independent with each other - answer โ โ The main reason that electrical appliances are connected in parallel rather than series is? Voltage - answer โ โ A step up transformer increases what? Inductive - answer โ โ A circuit with a lagging current means the circuit is what?
Dial indicator - answer โ โ An instrument used to check the motor shaft alignment is called what? Power - answer โ โ In AC circuits, the ratio of KW/kVA represents what factor? Larger plate area and smaller distance between plates
Insulator - answer โ โ What is a material with atoms in which the electrons tend to stay in their orbits? high frequency alternating current in a coil with an iron core - answer โ โ Hysteresis losses are caused by? Current - answer โ โ In magnetic and electric circuit analogy, magnetic flux is the analog of what? Commutator - answer โ โ A device that reverses the magnetic field polarity to keep a DC motor rotating Length - answer โ โ The resistance of a wire is directly proportional to the what and inversely proportional to the cross-sectional area? It's physical size - answer โ โ The energy in a battery cell depends mainly on what? Preevent the connection from loosening under vibration - answer โ โ Locknuts are sometimes used in making electrical connections on studs. In these cases the purpose of the locknut is to what
Copper - answer โ โ Where the conductor material is not specified in the code, the conductors are assumed to be what? Voltage drop - answer โ โ The voltage lost across a portion of a circuit is called the Current - answer โ โ In a series circuit this is common Direct - answer โ โ Battery supply what kind of current Piezoelectricity - answer โ โ Electron flow produced by means of applying pressure to a material is called what? Expansion joints - answer โ โ Raceways shall be provided with this to compensate for thermal expansion and contraction One-half cycle - answer โ โ An alternation is what?
Determines if the circuit is alive, determines polarity of DC circuits, and determines if circuit is AC or DC - answer โ โ What is the function of a neon glow tester? Chapter 5 - answer โ โ What chapter in the code is mobile homes referred to? Are sure the power is turned off - answer โ โ Never approach a victim of an electrical injury until you Real power - answer โ โ A wattmeter indicates what? Accessible - answer โ โ The connection of a ground clamp to a grounding electrode shall be Capacitive reactance exceeds the inductive reactance in the circuit - answer โ โ The current will lead the voltage when this happens Shall - answer โ โ Mandatory rules of the code are identified by the use of what word
